Long-period pulsations of the thermal microwave emission of the solar flare of June 2, 2007 from data with high spatial resolution

Data from the Nobeyama Radioheliograph at 17 GHz with high spatial and temporal resolution are used to detect quasi-periodic pulsations with periods from 55 to 250 s in the thermal component of the microwave emission of a solar flare loop observed on June 2, 2007. Observed pulsations with periods of...

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Bibliographic Details
Published in:Astronomy reports 2014-08, Vol.58 (8), p.573-577
Main Authors: Kupriyanova, E. G., Melnikov, V. F., Puzynya, V. M., Shibasaki, K., Ji, H. S.
Format: Article
Language:English
Subjects:
Astronomy
Emissions
Observations and Techniques
Physics
Physics and Astronomy
Radio astronomy
Solar flares
Solar physics
Sun
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Summary:Data from the Nobeyama Radioheliograph at 17 GHz with high spatial and temporal resolution are used to detect quasi-periodic pulsations with periods from 55 to 250 s in the thermal component of the microwave emission of a solar flare loop observed on June 2, 2007. Observed pulsations with periods of about 110–120 s are co-phased along the entire loop axis. The observed periodicity is most likely due to modulation of the radio emission by slow magnetoacoustic waves trapped in the filamentary flare loop.
ISSN:1063-7729
1562-6881
DOI:10.1134/S1063772914080022